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Determination of differential code biases with multi-GNSS observations

Wang, Ningbo and Yuan, Yunbin and Li, Zishen and Montenbruck, Oliver and Tan, Bingfen (2015) Determination of differential code biases with multi-GNSS observations. Journal of Geodesy. Springer. DOI: 10.1007/s00190-015-0867-4 ISSN 0949-7714

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In order to better understand the differential code biases (DCBs) of Global Navigation Satellite System, the IGGDCB method is extended to estimate the intra- and inter-frequency biases of the Global Positioning System (GPS), GLONASS, BeiDou navigation satellite system (BDS), and Galileo based on observations collected by the Multi-GNSS Experiment (MGEX) of the International GNSS Service (IGS). In the approach of IGGDCB, the local ionospheric total electronic content is modeled with generalized triangular series (GTS) function rather than using a global ionosphere model or a priori ionospheric information. The DCB estimated by the IGGDCB method are compared with the DCB products from CODE (the Center for Orbit Determination in Europe), DLR (German Aerospace Center), and the broadcast timing group delay parameters for the years of 2013 and 2014. The results indicate that GPS and GLONASS intra-frequency biases obtained in this work show the same precision as those estimated by DLR (about 0.1 and 0.2~0.4 ns for the two constellations, respectively, relative to the products of CODE). The precision of the IGGDCB-based inter-frequency biases estimated over the 24-month is about 0.29 ns for GPS, 0.56 ns for GLONASS, 0.36 ns for BDS and 0.24 ns for Galileo. Here, the accuracy of GPS and GLONASS biases is assessed relative to the products of CODE, while that of BDS and Galileo is compared to the estimates of DLR. In addition, the monthly stability of IGGDCB-based DCBs are 0.11 (GPS), 0.18 (GLONASS), 0.17 (BDS) and 0.14 (Galileo) ns for the individual constellation, respectively.

Item URL in elib:https://elib.dlr.de/100273/
Document Type:Article
Title:Determination of differential code biases with multi-GNSS observations
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Montenbruck, OliverDLR/RBUNSPECIFIED
Journal or Publication Title:Journal of Geodesy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s00190-015-0867-4
Keywords:Multi-GNSS experiment (MGEX) · Differential code bias (DCB), Timing group delay (TGD), Intra-frequency bias, Inter-frequency bias, IGGDCB, Total electronic content (TEC)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben Infrastruktur und Unterstützung für Raumflugbetrieb
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training
Deposited By: Montenbruck, Dr.rer.nat.hab. Oliver
Deposited On:07 Dec 2015 14:03
Last Modified:10 May 2016 23:36

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